Moving average using variadic templates. Takes average of consecutive 3-number sequence.

cpp-variadic-b.cpp

#include <iostream>

using namespace std;

template <typename U1, typename U2, typename U3>
void movingAvg(U1 u1, U2 u2, U3 u3) {
    cout << "AVG(" << u1 << ", " << u2 << ", " << u3 << ") = " << (u1 + u2 + u3) / 3.f << endl;
}

template <typename U1, typename U2, typename U3, typename... Ts>
void movingAvg(U1 u1, U2 u2, U3 u3, Ts... ts) {
  movingAvg(u1, u2, u3);
  movingAvg(u2, u3, ts...);
}

int main() {
  cout << "Example 2: moving average" << endl;
  movingAvg(4, 16, 78, 0, 15, -300, 680);
  return 0; 
}